Is there a formula to expand data to multiple rows per entry?

Here is my example table:

I would like to use the "#years" column to define how many rows should exist for each ID and then increase the "enroll year" column by 1 for each additional row. So, the end table from this sample of data would look like:

I imagine that I will need to use a reduce function, but I cannot figure out how to write this. Any help would be so appreciated!

Thank you!

Use reduce() and vstack(), like this:

=let(
  data, filter(A2:B, C2:C),
  reduce(A1:B1, sequence(rows(data)), lambda(a, i, let(
    vstack(a, map(sequence(index(C2:C, i), 1, 0), lambda(j, hstack(
      index(data, i, 1), index(data, i, 2) + j
    ))))
  )))
)

See let(), filter(), reduce(), sequence(), vstack(), map(), and index().